package com.cwz.core.context;

import com.alibaba.ttl.TransmittableThreadLocal;
import com.cwz.core.constant.SecurityConstants;
import com.cwz.core.text.Convert;
import com.cwz.core.utils.string.StringUtils;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @program: w-demo
 * @description: 权限上下文工具类
 * 获取当前线程变量中的 用户id、用户名称、Token、用户公司（这个看看是不是多租户/saas系统）等信息
 * 注意： 必须在网关通过请求头的方法传入，同时在 HeaderInterceptor 拦截器设置值。 否则这里无法获取
 * @author: Wen
 **/
public class SecurityContextHolder {
	private static final TransmittableThreadLocal<Map<String, Object>> THREAD_LOCAL = new TransmittableThreadLocal<>();

	public static void set(String key, Object value) {
		Map<String, Object> map = getLocalMap();
		map.put(key, value == null ? StringUtils.EMPTY : value);
	}

	public static String get(String key) {
		Map<String, Object> map = getLocalMap();
		return Convert.toStr(map.getOrDefault(key, StringUtils.EMPTY));
	}

	@SuppressWarnings("unchecked")
	public static <T> T get(String key, Class<T> clazz) {
		Map<String, Object> map = getLocalMap();
		return (T) map.getOrDefault(key, null);
	}

	public static Map<String, Object> getLocalMap() {
		Map<String, Object> map = THREAD_LOCAL.get();
		if (map == null) {
			map = new ConcurrentHashMap<>();
			THREAD_LOCAL.set(map);
		}
		return map;
	}

	public static void setLocalMap(Map<String, Object> threadLocalMap) {
		THREAD_LOCAL.set(threadLocalMap);
	}

	public static Long getUserId() {
		return Convert.toLong(get(SecurityConstants.DETAILS_USER_ID), 0L);
	}

	public static void setUserId(String account) {
		set(SecurityConstants.DETAILS_USER_ID, account);
	}

	public static String getUserName() {
		return get(SecurityConstants.DETAILS_USERNAME);
	}

	public static void setUserName(String username) {
		set(SecurityConstants.DETAILS_USERNAME, username);
	}

	public static String getUserKey() {
		return get(SecurityConstants.USER_KEY);
	}

	public static void setUserKey(String userKey) {
		set(SecurityConstants.USER_KEY, userKey);
	}

	public static String getPermission() {
		return get(SecurityConstants.ROLE_PERMISSION);
	}

	public static void setPermission(String permissions) {
		set(SecurityConstants.ROLE_PERMISSION, permissions);
	}

	public static String getCompany() {
		return get(SecurityConstants.DETAILS_COMPANY);
	}

	public static void setCompany(String company) {
		set(SecurityConstants.DETAILS_COMPANY, company);
	}

	public static void remove() {
		THREAD_LOCAL.remove();
	}
}
